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31.发明申请AUDIO ENCODING DEVICE, AUDIO ENCODING METHOD, AND COMPUTER-READABLE MEDIUM STORING AUDIO-ENCODING COMPUTER PROGRAM 审中-公开音频编码设备，音频编码方法和计算机可读媒体存储音频编码计算机程序公开(公告)号：US20120078640A1
公开(公告)日：2012-03-29
申请号：US13176932
申请日：2011-07-06
IPC分类号： G10L19/00
CPC分类号： G10L19/0212 , G10L19/008
摘要： An audio encoding device includes, a time-frequency transformer that transforms signals of channels, a first spatial-information determiner that generates a frequency signal of a third channel, a second spatial-information determiner that generates a frequency signal of the third channel, a similarity calculator that calculates a similarity between the frequency signal of the at least one first channel and the frequency signal of the at least one second channel, a phase-difference calculator that calculates a phase difference between the frequency signal of the at least one first channel and the signal of the at least one second channel, a controller that controls determination of the first spatial information when the similarity and the phase difference satisfy a predetermined determination condition, a channel-signal encoder that encodes the frequency signal of the third channel, and a spatial-information encoder that encodes the first spatial information or the second spatial information.
摘要翻译： 音频编码装置包括：变换信道信号的时间频率变换器，产生第三信道的频率信号的第一空间信息确定器，产生第三信道的频率信号的第二空间信息确定器， 计算所述至少一个第一信道的频率信号与所述至少一个第二信道的频率信号之间的相似度的相似度计算器，计算所述至少一个第一信道的频率信号之间的相位差的相位差计算器， 以及所述至少一个第二信道的信号，控制器，当所述相似度和所述相位差满足预定的确定条件时，控制所述第一空间信息的确定;编码所述第三信道的频率信号的信道信号编码器，以及 编码第一空间信息或第二空间信息的空间信息编码器 ation。
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公开(公告)号：US08619999B2
公开(公告)日：2013-12-31
申请号：US12563890
申请日：2009-09-21
CPC分类号： G10L19/008 , G10L19/0204
摘要： A decoded sound analysis unit (104) calculates, regarding the frequency-region stereo signals L(b) and R(b) decoded by the PS decoding unit (103), a second degree of similarity (109) and a second intensity difference (110) from the decoded sound signals. A spectrum correction unit (105) detects a distortion added by the parametric-stereo conversion by comparing the second degree of similarity (109) and the second intensity difference (110) calculated at the decoding side with the first degree of similarity (107) and the first intensity difference (108) calculated and transmitted from the encoding side, and corrects the spectrum of the frequency-region stereo decoded signals L(b) and R(b).
摘要翻译： 解码声音分析单元（104）针对由PS解码单元（103）解码的频域立体声信号L（b）和R（b），计算第二相似度（109）和第二强度差 110）。 频谱校正单元（105）通过将第二相似度（109）和在解码侧计算的第二强度差（110）与第一相似度（107）进行比较来检测由参数立体声转换所添加的失真，以及 从编码侧计算并发送第一强度差（108），并校正频域立体声解码信号L（b）和R（b）的频谱。
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公开(公告)号：US08295499B2
公开(公告)日：2012-10-23
申请号：US12823616
申请日：2010-06-25
CPC分类号： G10L19/025
摘要： An audio information processing apparatus and method include dividing an audio signal, determining a time period having a power change ratio of an audio signal larger than a first threshold value as an attack candidate, searching the time period of the attack candidate and a time period immediately before the time period of the attack candidate for an attack starting point, correcting a power of an audio signal included in the time period, and determining whether a power change ratio of the audio signal included in the time period is larger than a second threshold value for attack detection which is larger than the first threshold value.
摘要翻译： 音频信息处理装置和方法包括：分割音频信号，确定具有大于第一阈值的音频信号的功率变化率的时间段作为攻击候选者，在攻击候选者的时间周期和紧急时刻 在攻击起始点的攻击候选者的时间段之前，校正包括在该时间段内的音频信号的功率，以及确定该时间段中包括的音频信号的功率变化率是否大于第二阈值 用于大于第一阈值的攻击检测。
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公开(公告)号：US08225160B2
公开(公告)日：2012-07-17
申请号：US12654447
申请日：2009-12-18
IPC分类号： G06F11/30
CPC分类号： G10L19/032 , G10L19/005
摘要： A decoding apparatus includes a unit decoding and inversely quantizing coded data to obtain frequency domain audio signal data, a unit computing from the coded data one of the number of scale bits composed of the number of bits corresponding to the scale value of the coded data and the number of spectrum bits composed of the number of bits corresponding to the spectrum value of the coded data, a unit estimating a quantization error of the frequency domain audio signal data based on one of the number of scale bits and the number of spectrum bits of the coded data, a unit computing a correction amount based on the estimated quantization error and correct the frequency domain audio signal data obtained by the frequency domain data obtaining unit based on the computed correction amount, and a unit converting the corrected frequency domain audio signal data into the audio signal.
摘要翻译： 解码装置包括单元解码和逆量化编码数据以获得频域音频信号数据，单元从编码数据中计算由与编码数据的比例值相对应的位数组成的比例数位数， 由对应于编码数据的频谱值的比特数组成的频谱比特数，基于比例数位数和频谱比数之一估计频域音频信号数据的量化误差的单位 编码数据，单元基于估计的量化误差来计算校正量，并且基于所计算的校正量校正由频域数据获取单元获得的频域音频信号数据，以及将校正后的频域音频信号数据 进入音频信号。
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35.发明申请AUDIO CODING DEVICE, METHOD, AND COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM 有权音频编码设备，方法和计算机可读记录媒体存储程序公开(公告)号：US20120136657A1
公开(公告)日：2012-05-31
申请号：US13297536
申请日：2011-11-16
IPC分类号： G10L19/02
CPC分类号： G10L19/035 , G10L19/0017 , G10L19/008 , G10L19/0204
摘要： An audio coding device includes a time-to-frequency converter that performs time-to-frequency conversion on each frame of a signal in at least one channel included in an audio signal in a predetermined length of time in order to convert the signal in the at least one channel to a frequency signal; a complexity calculator that calculates complexity of the frequency signal for each of the at least one channel. The audio further includes a bit allocation controller that determines a number of bits to be allocated to each of at least one channel so that more bits are allocated to the each of the at least one channel as the complexity of the each of at least one channel increases, and increases the number of bits to be allocated as an estimation error in the number; and a coder that codes the frequency signal.
摘要翻译： 一种音频编码装置包括一个时间 - 频率转换器，它以预定的时间长度在包括在音频信号中的至少一个信道中的信号的每个帧上进行时间 - 频率转换，以便将信号转换成 至少一个频道到频率信号; 复杂度计算器，其计算所述至少一个信道中的每个信道的频率信号的复杂度。 音频还包括位分配控制器，其确定要被分配给至少一个信道中的每一个的比特数，使得更多的比特被分配给至少一个信道中的每一个，因为至少一个信道中的每一个的复杂度 增加并增加要分配的比特数作为该数量中的估计误差; 以及编码频率信号的编码器。
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公开(公告)号：US20110246139A1
公开(公告)日：2011-10-06
申请号：US13074379
申请日：2011-03-29
IPC分类号： G06F19/00
CPC分类号： G10L19/008
摘要： A downmixing device includes: a matrix conversion unit configured to perform a matrix operation for an input signal; a rotation correction unit configured to rotate an output signal of the matrix conversion unit; a spatial information extraction unit configured to extract spatial information from the output signal of the rotation correction unit; and an error calculation unit configured to calculate an error amount of the matrix operation result for the input signal by performing a matrix operation for the output signal of the rotation correction unit and the spatial information extracted by the spatial information extraction unit using a matrix that is inverse to the matrix used for the matrix operation by the matrix conversion unit.
摘要翻译： 下混合装置包括：矩阵转换单元，被配置为对输入信号执行矩阵运算; 旋转校正单元，被配置为旋转矩阵转换单元的输出信号; 空间信息提取单元，被配置为从旋转校正单元的输出信号中提取空间信息; 以及误差计算单元，被配置为通过对旋转校正单元的输出信号执行矩阵运算和由空间信息提取单元提取的空间信息，使用矩阵运算结果来计算输入信号的矩阵运算结果的误差量， 与矩阵转换单元用于矩阵运算的矩阵相反。
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公开(公告)号：US20110178806A1
公开(公告)日：2011-07-21
申请号：US13009018
申请日：2011-01-19
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： An encoding device includes, an estimation unit to estimate a decoded signal of a plurality of channels based on a down-mix signal obtained by down-mixing an input signal of the plurality of channels, similarity between the channels of the input signal, and an intensity difference between the channels of the input signal; an analysis unit to analyze a phase of the input signal and a phase of the decoded signal; a calculation unit to calculate phase information based on the phase of the input signal and the phase of the decoded signal; and a coding unit to encode the similarity between the channels of the input signal, the intensity difference between the channels of the input signal, and the phase information.
摘要翻译： 一种编码装置包括：估计单元，用于基于通过对多个信道的输入信号进行下混合获得的下混合信号，估计多个信道的解码信号，输入信号的信道之间的相似度和 输入信号通道之间的强度差; 分析单元，用于分析输入信号的相位和解码信号的相位; 计算单元，用于基于输入信号的相位和解码信号的相位来计算相位信息; 以及编码单元，用于对输入信号的信道之间的相似度，输入信号的信道之间的强度差和相位信息进行编码。
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公开(公告)号：US20100228552A1
公开(公告)日：2010-09-09
申请号：US12659306
申请日：2010-03-03
IPC分类号： G10L21/00
CPC分类号： G10L19/008 , H04S2400/03
摘要： An audio decoding apparatus and method are provided. The audio decoding apparatus includes a spectrum converting part configured to divide the first frequency spectrum in each channel of the first audio signal in a time direction or in a frequency direction to calculate a first signal sequence having the same time resolution and the same frequency resolution in all the channels of the first audio signal, a down-mixing part configured to perform weighted addition on the signals at the same time and within the same frequency band included in the first signal sequence in all the channels to calculate a second signal sequence having channels of a second number different from the first number of channels.
摘要翻译： 提供音频解码装置和方法。 音频解码装置包括频谱转换部分，被配置为在时间方向或频率方向上划分第一音频信号的每个信道中的第一频谱，以计算具有相同时间分辨率和相同频率分辨率的第一信号序列 所述第一音频信号的所有信道，下混合部分被配置为在所有信道中同时且在包括在所述第一信号序列中的相同频带内的信号上对所述信号执行加权相加，以计算具有信道的第二信号序列 与第一数量的频道不同的第二号码。
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公开(公告)号：US20100169080A1
公开(公告)日：2010-07-01
申请号：US12634862
申请日：2009-12-10
CPC分类号： G10L19/032 , G10L19/008
摘要： An audio encoding apparatus that encodes audio signals of a plurality of channels, includes an adaptive bit allocation control unit that adaptively controls a number of encoding bits assigned to the audio signal of each channel in accordance with perceptual entropy of the audio signal of each of the channels, a fixed bit allocation control unit that fixedly controls the number of encoding bits assigned to the audio signal of each of the channels in predetermined allocations, and a channel encoding unit that encodes the audio signal of each of the channels based on the number of adaptive allocation bits assigned by the adaptive bit allocation control unit and the number of fixed allocation bits assigned by the fixed bit allocation control unit.
摘要翻译： 编码多个声道的音频信号的音频编码装置包括：自适应位分配控制单元，其根据每个声道的音频信号的感知熵自适应地控制分配给每个声道的音频信号的编码位数 信道，固定位分配控制单元，其固定地控制分配给预定分配中的每个信道的音频信号的编码比特的数量;以及信道编码单元，其基于每个信道的数量来编码每个信道的音频信号 由自适应位分配控制单元分配的自适应分配比特和由固定比特分配控制单元分配的固定分配比特数。
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40.发明申请Voice packet loss concealment device, voice packet loss concealment method, receiving terminal, and voice communication system 有权语音包丢失隐藏设备，语音丢包隐藏方法，接收终端和语音通信系统公开(公告)号：US20050166124A1
公开(公告)日：2005-07-28
申请号：US11065416
申请日：2005-02-24
CPC分类号： G10L19/005 , H04L29/06027 , H04L65/607 , H04L65/80 , H04M7/006
摘要： In a voice packet communication system, a voice packet loss concealment device compensates for the deterioration of voice quality due to voice packet loss. In the device, a detecting section detects a loss of a voice packet and outputting information; an estimating section estimates the voice characteristics of the lost segment using a pre-loss voice packet received before the lost segment or a post-loss voice packet received after the lost segment; a pitch signal generating section generates a pitch signal having the voice characteristics; and a lost packet generating section outputs the pitch signal generated by the pitch signal generating section, with the voice characteristics estimated by the estimating section, which allows abnormal noise and feeling of mute, subjective deterioration of naturalness and continuity to be improved, and the voice packet loss concealment to be further improved.
摘要翻译： 在语音分组通信系统中，语音分组丢失隐藏装置补偿语音分组丢失导致的语音质量的恶化。 在该装置中，检测部检测出语音分组的丢失并输出信息; 估计部分使用在丢失段之前接收到的丢失前话音分组或在丢失分段之后接收到的丢失后语音分组来估计丢失分段的语音特性; 音调信号产生部分产生具有语音特征的音调信号; 并且丢失分组产生部分输出由音调信号产生部分产生的音调信号与由估计部分估计的语音特征，其允许异常噪声和静音感觉，自然性和连续性的主观恶化被改善，并且语音 丢包隐藏进一步提高。
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